Sci Ch - Mysteries of the Abandoned Series 5 Part 6 Secrets of the Doomsday Caves (2019)
Mysteries of the Abandoned Series 6 Secrets of the Doomsday Caves (2019)
A vast network of subterranean bunkers in the American west was home to the power to destroy nations, but today, this facility is deserted, and new discoveries reveal why this eerie place was built and why it was abandoned.
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